Home / 7,015.56-9,680.58-3,871.55

Finding the Fourth Proportional to 7,015.56, 9,680.58 and 3,871.55

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Solution

The fourth proportional to 7,015.56, 9,680.58 and 3,871.55 is: 5,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.56 : 9,680.58 = 3,871.55 : x
  2. Step 2: Convert to fraction form
    7,015.56/9,680.58 = 3,871.55/x
  3. Step 3: Cross multiply
    7,015.56x = 9,680.58 × 3,871.55
  4. Step 4: Simplify right side
    7,015.56x = 37,478,801.10
  5. Step 5: Solve for x
    x = 37,478,801.10/7,015.56
  6. Step 6: Final answer
    x = 5,342.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.